 If you liked
Koroshi Ai
|
 ...then you might like
Sachi-iro no One Room
|
Both stories are psychological semi-romances with criminals for main characters. Sachi-iro no One Room is about a girl and her kidnapper, and their unlikely story which leads to codependency and struggling to stay together. Koroshi Ai focuses on a female bounty hunter who gains a murderous admirer/stalker who seems to know a lot about her past. Both are highly entertaining if you're into more mature, thought-provoking romances.